Scandinavia Ghost Rocket Hysteria (1946)

The ghost rockets reported over Scandinavia in 1946, mainly in Sweden, were concluded by German, British, and Scandinavian intelligence officials to be a case of mass hysteria. Investigations logged approximately 2,000 sightings of rocket- or missile-shaped unidentified flying objects between May and December 1946, attributing many sightings to meteors. Despite some suspicions of Soviet involvement, the phenomenon spread to other countries, prompting a search for extraterrestrial origins, particularly in Greece, where physicist Paul Santorini led an investigation before it was abruptly stopped.